Shelf unit or similar article



FIG. 1 is a front perspective view of a shelf unit or other similar article showing my design;

FIG. 2 is a top plan view;

FIG. 3 is a front elevation;

FIG. 4 is side elevation taken from the left-hand side of FIGS. 1, 2, and 3, the right-hand side being a mirror image;

FIG. 5 is a rear elevational view as a reduced scale; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a shelf unit or similar article, as shown and described. 